• Product


Multi-Purpose Acrylic Latex Admixture
Product overview

Bostik 425 Multi-Purpose Acrylic Latex Admixture is a high solids acrylic emulsion designed to improve the performance of Bostik Glass-Mate™, Single-Flex® FS, Tile-Mate® mortars, Hydroment® Ceramic Tile Grout™, Hydroment® Dry Tile Grout™, UltraFinish™ Pro, Webcrete® 95, UltraRamp™ and job site prepared mortar beds.

Geographic availability
  • Canada
  • United States of America

Smart Advantages

Mortar, grout and patch admixture
Improved water resistance
Improved freeze/thaw resistance

Where to Use Bostik 425

  • Interior and exterior floors
  • Interior and exterior walls


  • Plywood sub-floors
  • Porcelain tiles
  • Gypsum board
  • Cementious backer boards
  • Waterproofing membranes
  • Crack isolation membranes